#局部变量
def use_var():
    name = '欲穷千里目，更上一层楼'
    print(name)
use_var()
print(name)


#全局变量
count =10
def use_var():
    print(count)
use_var()
print(count)

count = 10
def use_var():
    global count
    count += 10
    print(count)
use_var()
